1284289342 has 32 divisors (see below), whose sum is σ = 2259366912. Its totient is φ = 536052384.

The previous prime is 1284289283. The next prime is 1284289367. The reversal of 1284289342 is 2439824821.

It is a happy number.

It is a super-2 number, since 2×1284289342² = 3298798227949585928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218028 + ... + 223840.

It is an arithmetic number, because the mean of its divisors is an integer number (70605216).

Almost surely, 2^1284289342 is an apocalyptic number.

1284289342 is a deficient number, since it is larger than the sum of its proper divisors (975077570).

1284289342 is a wasteful number, since it uses less digits than its factorization.

1284289342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6232.

The product of its digits is 221184, while the sum is 43.

The square root of 1284289342 is about 35836.9828808174. The cubic root of 1284289342 is about 1086.9785137374.

The spelling of 1284289342 in words is "one billion, two hundred eighty-four million, two hundred eighty-nine thousand, three hundred forty-two".